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heat pump
noun
: an apparatus for heating or cooling (such as a building) by transferring heat by mechanical means from or to an external reservoir (such as the ground, water, or outside air)
Examples of heat pump in a Sentence
Recent Examples on the Web
The unit comes equipped with a 9,000-BTU ductless A/C with heat pump for both warm and cold weather and is fully insulated.
—New Atlas, 2 Feb. 2025
The big new feature is a heat pump, which helps preserve range in cold weather.
—Emily Forlini, PCMAG, 30 Jan. 2025
Energy Star heat pumps and geothermal heat pumps may be eligible for tax credits.
—Brandee Gruener, Southern Living, 28 Jan. 2025
However, The Washington Post says that heat pumps aren’t as effective below 15 degrees.
—Umar Shakir, The Verge, 23 Jan. 2025
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Word History
First Known Use
1894, in the meaning defined above
Dictionary Entries Near heat pump
Cite this Entry
“Heat pump.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heat%20pump. Accessed 7 Feb. 2025.
Kids Definition
heat pump
noun
: a device for heating or cooling a building by transferring heat contained in a fluid to or from the building
More from Merriam-Webster on heat pump
Britannica.com: Encyclopedia article about heat pump
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